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A chemist needs to mix an 18% acid solution with a 45% acid solution to obtain a 12 liter mixture consisting of 36% acid. How many liters of each acid solutions must be used?

  • Math -

    amount of 18% solution --- x L
    amount of 45% solution --- 12-x L
    .18x + .45(12-x) = .36(12)
    times 100
    18x + 45(12-x) = 36(12)

    take it from here

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